Clutch.



E. F. NORELIUS.

CLUTCH.

Pmend 23,1916.

-SHEET l.

APPLICATION FILED FEB. 16, 1914.

'W ML f t. r. NORELIUS.

CLUTCH.

APPucATloN FILED FEB.16,1914.

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Patented May 23, 1916..

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APPLICATION FILED FEB. I5, I9I4. Y l

latfnted May 23, 19N).

4 SHEETSWSHEET 4- UNrrED sfrafrns PATE EMIL F. NORELIUS, OF PEORIA, ILLINOIS, ASSIGNOR T0 HOLT MANUFACTURING COMPANY, 0F PEORIA, ILLINOIS, A GORPORATIN OF CALIFORNIA.

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specication n'f Letters Patent.

Patented May 23, 1916.

Application filed February 1S, 1914. Serial No. 818,837.

T 0 all whom it may concern Be it known that I, EMIL F. NORELIUS, a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented a certain new and useful Improvement in Clutches, ot' which the following isa specification.

My invention relates to improvements in clutches suitable for a great number of purposes but particularly best adapted to use in connection with tractors of the caterpillar type. I have illustrated it for the sake of convenience as applied to a caterpillar tractor which I have shown in a more or less fragmentary diagrammatic form.

The invention is illustrated in the accompanying drawings, wherein- Figure 1 is a detail side elevation of one end of a tractor with parts broken away; Fig. 2 is a detail plan view in section with parts broken away; Fig. 3 is a section along line 3 3 of Fig. 2 on an enlarged scale with parts omitted; Fig. 4 is a scctionalong line .4 4 of Fig. 3; Fig. 5 is a section along line 5 5 of Fig. 4; and Fig. (S a section along line 6-6 of Fig.

,Like parts are indicated by like letters throughout the several figures.

A is the main frame supported by means of the springs A1 from the roller frame A2 which roller frame is supported with the supporting rollers A pivotally mounted thereon.

A4 is a driving sprocket mounted on an axle A5 on the frame A.

A5 is a' caterpillar chain adapted to travel over the driving sprocket A* and furnish a track along which the rollers A5 may travel.

A7 is a. bull gear on the sprocket A4t in mesh with a bull pinion As on a shaft A5 rotatably mounted on the frame A. This shaft carries at its inward end a reduction gear A1".

It will be noted that the' parts above described are in duplicate, one` on either side of the machine. They are, however, identical in every respect, and a description of one will suffice for both.

By is a drive shaft driven by any suitable sourceof power such as n n engine not here shown. This drive shaft is arranged in the bearing BP and along the line parallel with .the central axis of the frame. It carries on bined clutch and brake assembly.

- the angle alpha and to wedge the blocks C* its end a miter pinion B2 constantly in mesh with the miter gears B3 B4, which gears are rotatably mounted but held against longitudinal movement along `a shaft B5.

B5 is a sliding clutch member splined to the shaft B5 in opposition to clutch jaws BT BB- on the gears B5 B4 respectively and adapted to be actuated by a yoke B9 controlled in any suitable manner to reverse the direction of movement of the shaft B5 with respect tothe shaft B to move the machine forward or reverse.

The shaft B5 has at either end a com- These as semblies are in each case identical, and a description of one will suffice for both.

C is a driving pinion in mesh with the gear A10 mounted on the sleeve C1, which sleeve is rotatable on the shaft B5 and car ries a clutch spider C2.

C5 is a clutch drum keyed to the shaft B5.

C"'C` are brake shoes opposed to the drum C3 and slidable along the guide pins C5 on the spider C2.

C is a rocker block rockably or rotatably mounted about the sleeve C1 inside the drum C. This rocker block has slidably mounted on either side of the shaft B5" the pins C1 shouldered to engage the yokes C8 which are held in position against the shoulders by the nuts C.

Clo is a pivotal link interposed between one of the yokes Ca and the clutch shoes C. C is an adjust-able pivotal link interposed between the other yoke C8 and shoe C. The yokes V38 are thus free to move slightly' with respect to the block C6.

C12 is a controlling arm projecting outwardly from one. side of the rocker block C5 having pivotally mounted thereon a pin arm C at the other, tends to separate the arms C12 C and thus yieldingly decrease apart and clamp them against4 the surface of the brake drum C3. This movementis limited by the nuts C. i

D is a hub carried on thezarm I)1 of the spider C2. This hub carries a shaft D2 on 105 which is rotatably mounted a pinion D8.-

This pinion is in mesh with the fragmentary gear D" on a brake wheel l); which wheel is rotatably mounted on the sleeve (l1.

D is a eam earried by theI pinion D".

D? is a eam ,voke in the path of the cam D". D" is a control rod projecting from said earn yoke and in slidably engagement with the blork D pivoted on the arm Dm on the roeker bloek Cf'.

D" is a yielding spring interposed Vbe-YV tween the bleek D" and the adjustable ynut D.

l)"" is a shoulder on the pin D to limit the moven'ient of the pin with respect to the hloolc D. l i

D" D are stops on the eluteh wheel D" to limit the rotary progress of the pinion D with respect to the wheel.

l) is a brake and guard bracket on the frame A partially surrounding the brake wheel D.

li is a brake band engaging the wheel D and anehored at one end on the braeket l.

E2 is a brake lever to whieh is pivotally mounted the free end of the brake hand li'.

li is a bra ke shaft on whieh the lever is mounted and ll is a hand lever whereby the brake band may be tightened.

vlt vill be evident that while l ha ve shown in my drawings an operative deviee, still many changes might he made in sirio, shape and arrangement of parts withoutdeparting materially from the spirit of my invention. l wish, therefore, that my drawings be regarded as in a sense diagrammatie.

The use and operation of my invention are as follows: ln operating the traf-tor, the engine. will,of course, be started in the usual manner and the eluteh thrown in tojnove the maehine either forward or baelniard, depending on which of the two miter ifears B3 ilf is in mesh with the pinion l?. Hint-e the,springs C hold the two elutehes in the operating position, the machine will move forward in a straight line, since both eaterpillars will he moved forward with equal force and velocity. When it is desired, however, to move the caterpillar to one side or the other to steer it about, this is to be done by decreasing the forward movement of one of the driving or caterpillar Wheelsv "Ihis done by manipulation of the brake band. The brake band is tightened up so as to arrest at first the movement of the ,brake. wheel. AS this takes plaee the eluteh spider eontinues td rotate. now, however, more rap-v idly tlian the brake wheel, and this results in a. rotation of the pinion on the. spider, owing to the change in relative veloeities. "l`he result of this is to move the eam on the pinion around to draw in on the earn yoke and gradually roek the roeker bloek against the tension of the larger spring to inrrease 'the angle alpha and draw the two eluteh shoes outof eontaet. with the eluteh drum.

This eontinues until the pinion `comes in eontaet with one or the other of the stops on the brake wheel. Then no further relative moven'ient ran be had and the braking ell'eet of the brake band on the brake wheel is transmitted throllgh the gearing to the raterpillar itself. 'l`hus a single movement of the bralv'e lever operates to disronnet-t the eluteh first so as to no longer drive the eaterpillar and snbsequentlv to exi-rt a braking effeet so as to dtacrease its forward movement to turn the maehine.

I elaim:

l. ln a elnteh. the eombination with a drivin; r element and a driven element of a eonneetion interposed between said elements to transmit power from tlnl driving elev ment to the driven element. spring means for normally maintaining said operative relation between the eonneetion and the two elements, a motion arresting deviee with means l'or artuating the same, and means responsive to aetnalion ol' said motion arrest.- ing deviee for preliminarilv overroming the ell'ef't ol' said spring means and thereby disronneiting thodriven element from the drivin, r element and snbsefpiently positively transmitting thev motion arresting elli-.et from said deviee through the said ronneetion to the driven element to positivelynu'` rest its movei'nent.

ln a rlutrjh, the eombination with a driving element and a driven element, of means for normally eonneeting both said elements to transmit'. power'l'rom the driv ing element. to the driven element, a motion arresting deviee with means fornetnating the same, means responsive to aetnation of said motion arresting deviee for preliniif narily diseonneeting the driven element from the drivingr element and subsequently positively transmitting the motion arrestingr elfert from said deviee to the driven element and positively arrest its movement, and means ineluding a spring operated (fonneetion interposed between the driving Velement and the driven element for :internatieally and positively restoring them to conneeted relation t'or the transmission of power when the motion arresting deviee is rendered inoperative.

3. ln a eluteh, the eombination with a driving shaft earrying a eluteh drum, of a drivenl shaft, eonneetions earried by the driven shaft and means for causing said conneetions to frietionally engage the eluteh drum whereby motion is transmitted from the driving shaft to the driven Shaft, a brake drum mounted on the driven shaft, means for arresting the movement of tbe brake drum, and a power disconnecting element interposed between the brake drum and said eonneetions for positively diseonneeting the driven shaft from the driving shaft respon-- sive to retarded movement of the brake 

